this is java program please help

Method File - Class GenericArrayMethods

• Generic method Print Receives parameters Description (data type: String) and an Array. Method will display the value of Description. On separate lines, display each element of the Array.
• Generic method Initialize Receives parameters Initializing Value and an Array. Method will set all array elements equal to the Initializing Value.

Main File - Class LabActivityGenerics

• Declare a constant Number fo Buildings and set its value to 3
• Declare an appropriate object subclass Building Cost array (currency: $, size: Number of Buildings)
• Call the generic method Initialize passing it -1 and the array.
• Call the generic method Print passing it "Initialized Values" and the array.
• Use a loop to ask the user to enter the cost of each building. Store these values in the array.
• Call the generic method Print passing it "Building Costs" and the array.

Main File - Class ArrayListGenerics

• Create an ArrayList to hold the values of Building Cost (currency: $)
• Use a loop to ask the user to enter the cost of the building. Use a sentinel value to end the loop. Store each value entered in the ArrayList.
• Display a description and the value of the 1^st element in the ArrayList.
• Display a description and the value of the last element in the ArrayList.